Umberon is hiding in Kings Heath Park. It is a very popular park so care needs to be taken.
Pokemon have four moves to help them in their quest.
After another relocation there are some different moves.
Umberons moves are Duck Read, Stealth, Frustration and Reach.
I hope that you do not suffer too much from the Frustration and Hidden Power.
Plenty of public transport running part the park including the 11 bus route that will take you all round Birmingham. There is plenty of parking in the park during daylight hours. There is a tearoom in the park and swings and climbing frames for the little cachers.
With Camp Hill Boys and Camp Hill Girls Schools next door to the park it can get busy during term times at lunch and after school so best to try and avoid these times. Hope you catch him.